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Two men charged with foreign incursion offences in Sydney

Police have charged two men with foreign incursion offences following a counter-terrorism raid in Sydney's west today.

One of the men, 24-year-old Mehmet Biber, was arrested during a traffic stop in Birrong this morning and is an alleged ISIS fighter.

The Merrylands man reportedly travelled to Syria in July 2013 and was with a group known as Jabhat al-Nusra, an affiliate of Al Qaeda.

Police say he had been a focus of the Joint Counter Terrorism Team since his return to Australia two years ago.

Mr Biber was allegedly convinced to join ISIS by convicted terrorism recruiter Hamdi Alqudsi, who is currently serving six years in jail for sending seven men to fight in Syria.

Officers swoop on the man at a traffic stop in Sydney's west. (Supplied)

“If we become aware of people who may have travelled to engage in hostile activities… we are determined to pursue the investigation and put the person before the court if that is the case,” Deputy Commissioner Catherine Burn said.